KR20100004162U - Optical communication equipment is possess to measurement do measurement terminal of optical signal and optical communication equipment is measurement do measurement equipment immanence of optical signal - Google Patents

Optical communication equipment is possess to measurement do measurement terminal of optical signal and optical communication equipment is measurement do measurement equipment immanence of optical signal Download PDF

Info

Publication number
KR20100004162U
KR20100004162U KR2020080013640U KR20080013640U KR20100004162U KR 20100004162 U KR20100004162 U KR 20100004162U KR 2020080013640 U KR2020080013640 U KR 2020080013640U KR 20080013640 U KR20080013640 U KR 20080013640U KR 20100004162 U KR20100004162 U KR 20100004162U
Authority
KR
South Korea
Prior art keywords
measuring
optical
communication device
input
measurement
Prior art date
Application number
KR2020080013640U
Other languages
Korean (ko)
Other versions
KR200451518Y1 (en
Inventor
전혜옥
Original Assignee
전혜옥
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 전혜옥 filed Critical 전혜옥
Priority to KR2020080013640U priority Critical patent/KR200451518Y1/en
Publication of KR20100004162U publication Critical patent/KR20100004162U/en
Application granted granted Critical
Publication of KR200451518Y1 publication Critical patent/KR200451518Y1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Optical Communication System (AREA)

Abstract

본 고안은 광신호를 측정하는 측정장치가 내재된 광통신 장비에 관한 것으로 상세하게는 광신호 이상여부를 측정하는 장치가 연결되는 광통신 장비에 있어서, 외부의 광통신 장비의 입출력 단자와 광케이블로 연결되어지는 입출력 단자와; 상기 입출력 단자와 연결되어 외부의 광통신 장비와 광신호로 통신하는 통신장치와; 상기 입출력 단자와 상기 통신장치 간에 병렬로 연결되어 상기 입출력 단자를 통해 상기 통신장치로 전송되어지는 광신호의 이상신호를 측정하고 검출해 내는 측정장치와; 상기 측정장치와 연결되어 상기 측정장치에서 출력되어지는 측정값을 표시하는 표시장치;를 포함하여 구성되어지는 것을 특징으로 하는 광신호를 측정하는 측정장치가 내재된 광통신 장비에 관한 것이다.The present invention relates to an optical communication device in which a measuring device for measuring an optical signal is embedded, and more particularly, in an optical communication device to which an apparatus for measuring an optical signal is connected is connected to an input / output terminal of an external optical communication device and an optical cable. Input and output terminals; A communication device connected to the input / output terminal to communicate with an external optical communication device through an optical signal; A measuring device connected in parallel between the input / output terminal and the communication device to measure and detect an abnormal signal of an optical signal transmitted to the communication device through the input / output terminal; And a display device connected to the measurement device to display a measurement value output from the measurement device. The present invention relates to an optical communication device having a measurement device for measuring an optical signal.

광통신, 통신장치, 광신호, 광케이블, 측정장치, 측정단자 Optical communication, communication device, optical signal, optical cable, measuring device, measuring terminal

Description

광신호를 측정하는 측정장치가 내재된 광통신 장비와 광신호를 측정하는 측정단자가 구비된 광통신 장비{Optical communication equipment is possess to measurement do measurement terminal of optical signal and optical communication equipment is measurement do measurement equipment immanence of optical signal}Optical communication equipment is possess to measurement do measurement terminal of optical signal and optical communication equipment is measurement do measurement equipment immanence of optical signal}

본 고안은 광신호를 측정하는 측정장치가 내재된 광통신 장비에 관한 것으로 상세하게는 광신호 이상여부를 측정하는 장치가 연결되는 광통신 장비에 있어서, 외부의 광통신 장비의 입출력 단자와 광케이블로 연결되어지는 입출력 단자와; 상기 입출력 단자와 연결되어 외부의 광통신 장비와 광신호로 통신하는 통신장치와; 상기 입출력 단자와 상기 통신장치 간에 병렬로 연결되어 상기 입출력 단자를 통해 상기 통신장치로 전송되어지는 광신호의 이상신호를 측정하고 검출해 내는 측정장치와; 상기 측정장치와 연결되어 상기 측정장치에서 출력되어지는 측정값을 표시하는 표시장치;를 포함하여 구성되어지는 것을 특징으로 하는 광신호를 측정하는 측정장치가 내재된 광통신 장비에 관한 것이다.The present invention relates to an optical communication device in which a measuring device for measuring an optical signal is embedded, and more particularly, in an optical communication device to which an apparatus for measuring an optical signal is connected is connected to an input / output terminal of an external optical communication device and an optical cable. Input and output terminals; A communication device connected to the input / output terminal to communicate with an external optical communication device through an optical signal; A measuring device connected in parallel between the input / output terminal and the communication device to measure and detect an abnormal signal of an optical signal transmitted to the communication device through the input / output terminal; And a display device connected to the measurement device to display a measurement value output from the measurement device. The present invention relates to an optical communication device having a measurement device for measuring an optical signal.

일반적으로 광통신 장비에서 송수신 되어지는 광신호의 레벨과 손실, 파장등 을 측정하기 위하여 광통신 장비의 입출력단자에 연결되어지는 광케이블을 분리하여 광신호의 레벨과 손실, 파장등을 측정하는 측정장치에 연결하여 측정하였다.In general, to measure the level, loss, and wavelength of the optical signal transmitted and received from the optical communication equipment, separate the optical cable connected to the input and output terminals of the optical communication equipment and connect it to the measuring device that measures the level, loss, and wavelength of the optical signal. It was measured by.

그러나 종래의 측정방법은 광케이블을 광통신 측정장비에 분리 연결할 때 광케이블 콘넥터와 광통신장비의 연결단자가 반복된 탈부착으로 마모등 파손되어질 수 있는 문제점이 있으며, 측정을 할 때 광전송로가 절단되므로 측정할 시간에는 광통신을 할 수 없는 문제점이 있다.However, the conventional measuring method has a problem in that the optical cable connector and the connection terminal of the optical communication equipment may be damaged due to repeated detachment and detachment when the optical cable is connected to the optical communication measuring equipment. There is a problem in that optical communication is not possible.

상기의 문제점을 해결하기 위하여 광통신 장비의 내부에 측정장치를 입출력단자와 통신장치 간에 연결하고, 표시장치를 상기 측정장치에 연결하여 상기 입출력 단자를 통해 송수신되어지는 광신호의 레벨, 손실, 파장, 소광비등을 측정하여 표시장치로 측정값을 표시하는 광신호를 측정하는 측정장치가 내재된 광통신 장비를 제공하는데 그 목적이 있다.In order to solve the above problems, a measurement device is connected between an input / output terminal and a communication device inside the optical communication device, and a display device is connected to the measurement device to provide the level, loss, wavelength, It is an object of the present invention to provide an optical communication device in which a measuring device for measuring an extinction boiling and measuring an optical signal for displaying a measured value is displayed.

상기의 과제를 해결하기 위하여 외부의 광통신 장비의 입출력 단자와 광케이블로 연결되어지는 입출력 단자와; 상기 입출력 단자와 연결되어 외부의 광통신 장비와 광신호로 통신하는 통신장치와; 상기 입출력 단자와 상기 통신장치 간에 병렬로 연결되어 상기 입출력 단자를 통해 상기 통신장치로 전송되어지는 광신호의 이상신호를 측정하고 검출해내는 측정장치와; 상기 측정장치와 연결되어 상기 측정장치에서 출력되어지는 측정값을 표시하는 표시장치;를 포함하여 구성되어진다.An input / output terminal connected to an input / output terminal and an optical cable of an external optical communication device to solve the above problem; A communication device connected to the input / output terminal to communicate with an external optical communication device through an optical signal; A measuring device connected in parallel between the input / output terminal and the communication device to measure and detect an abnormal signal of an optical signal transmitted to the communication device through the input / output terminal; And a display device connected to the measuring device to display the measured value output from the measuring device.

본 고안은 광통신 장비의 내부에 측정장치를 입출력단자와 통신장치 간에 연결하고, 표시장치를 상기 측정장치에 연결하여 상기 입출력 단자를 통해 송수신되어지는 광신호의 레벨, 손실, 파장, 소광비등을 측정하여 표시장치로 측정값을 표시하는 구성으로 이루어져 항상 광신호의 레벨, 손실, 파장, 소광비등을 측정하여 표시하므로 광케이블을 광통신 장비에서 분리할 필요가 없으며, 광신호의 상태를 항상 표시하므로 장애가 발생하면 바로 문제를 해결할 수 있다.The present invention connects a measuring device between an input / output terminal and a communication device inside an optical communication device, and connects a display device to the measuring device to measure the level, loss, wavelength, extinction ratio, etc. of an optical signal transmitted and received through the input / output terminal. It is composed of displaying the measured value by the display device, so it always measures and displays the level, loss, wavelength, extinction ratio of the optical signal, so there is no need to separate the optical cable from the optical communication equipment. Just solve the problem.

본 고안은 광신호 이상여부를 측정하는 장치가 연결되는 광통신 장비에 있어서, 외부의 광통신 장비의 입출력 단자(10)와 광케이블로 연결되어지는 입출력 단자(10)와; 상기 입출력 단자(10)와 연결되어 외부의 광통신 장비와 광신호로 통신하는 통신장치(20)와; 상기 입출력 단자(10)와 상기 통신장치(20) 간에 병렬로 연결되어 상기 입출력 단자(10)를 통해 상기 통신장치(20)로 전송되어지는 광신호의 이상신호를 측정하고 검출해내는 측정장치(30)와; 상기 측정장치(30)와 연결되어 상기 측정장치(30)에서 출력되어지는 측정값을 표시하는 표시장치(40);를 포함하여 구성되어진다.The present invention provides an optical communication device to which an apparatus for measuring an optical signal abnormality is connected, the input / output terminal 10 connected to an input / output terminal 10 and an optical cable of an external optical communication device; A communication device 20 connected to the input / output terminal 10 to communicate with an external optical communication device through an optical signal; A measuring device connected in parallel between the input / output terminal 10 and the communication device 20 to measure and detect an abnormal signal of an optical signal transmitted to the communication device 20 through the input / output terminal 10 ( 30); And a display device 40 connected to the measuring device 30 to display the measured value output from the measuring device 30.

이때, 상기 측정장치(30)는 광신호의 레벨, 손실, 파장, 소광비 중 어느 하나 또는 다수의 항목에 대한 측정이 가능하다.In this case, the measuring device 30 can measure any one or a plurality of items of the level, loss, wavelength, extinction ratio of the optical signal.

그리고, 상기 입출력 단자(10)와 통신장치(20) 간에는 별도의 측정장치(30)가 외부에서 연결되어질 수 있도록 측정단자(50)가 형성되어진다.In addition, a measurement terminal 50 is formed between the input / output terminal 10 and the communication device 20 so that a separate measurement device 30 can be connected from the outside.

본 고안의 다른 구성으로는 광신호 이상여부를 측정하는 장치가 연결되는 광통신 장비에 있어서, 외부의 광통신 장비의 입출력 단자와 광케이블로 연결되어지는 입출력 단자(110)와; 상기 입출력 단자(110)와 연결되어 외부의 광통신 장비와 광신호로 통신하는 통신장치(120)와; 상기 입출력 단자(110)와 통신장치(120) 간에 설치되어 별도의 측정장치가 외부에서 연결되어질 수 있도록 하는 측정단자(130);를 포함하여 구성되어진다.According to another aspect of the present invention, there is provided an optical communication device to which an apparatus for measuring an optical signal abnormality is connected, an input / output terminal 110 connected to an input / output terminal of an external optical communication device and an optical cable; A communication device (120) connected to the input / output terminal (110) and communicating with an external optical communication device through an optical signal; And a measurement terminal 130 installed between the input / output terminal 110 and the communication device 120 so that a separate measurement device can be connected from the outside.

즉, 본 고안을 일 실시예를 들어 좀더 상세하게 설명하면 다음과 같다.That is, the present invention will be described in more detail with reference to one embodiment.

외부의 광통신 장비와 연결되어진 광케이블을 통해 외부 광통신 장비와 통신하는 통신장치(20)와 광케이블 간에 입출력 단자(10)가 형성되어지고, 상기 입출력 단자(10)와 외부의 광통신 장비와 통신하는 통신장치(20)가 연결되고, 상기 입출력 단자와 통신장치(20) 간에 병렬로 광신호의 레벨, 손실, 파장, 소광비등을 측정하는 측정장치가 연결되며, 상기 측정장치(30)에서 출력되어지는 측정값을 표시하는 표시장치(40)가 상기 측정장치(30)와 연결되어진다.An input / output terminal 10 is formed between the optical device and the communication device 20 for communicating with the external optical communication device through an optical cable connected to an external optical communication device, and the communication device for communicating with the input / output terminal 10 and the external optical communication device. 20 is connected, and a measuring device for measuring the level, loss, wavelength, extinction ratio, etc. of the optical signal in parallel between the input and output terminals and the communication device 20 is connected, the measurement output from the measuring device 30 A display device 40 for displaying a value is connected to the measuring device 30.

그리고, 상기 입출력 단자(10)와 통신장치(20) 간에 병렬로 측정단자(50)가 설치되어 별도로 외부의 측정장치(30)가 연결되어지도록 한다.In addition, the measurement terminal 50 is installed in parallel between the input / output terminal 10 and the communication device 20 so that an external measurement device 30 is separately connected.

즉, 상기 입출력 단자(10)와 상기 통신장치(20) 간에 병렬로 설치되어지는 측정단자(50)는 상기 측정장치(30)가 고장이거나 상기 측정장치(30)에서 측정하는 항목과 다른 항목의 측정값을 측정하기 위하여 별도로 사용자가 구비하게 되는 외부의 측정장치를 연결할 수 있도록 한다.That is, the measurement terminal 50 installed in parallel between the input / output terminal 10 and the communication device 20 has a different item than that measured by the measurement device 30 or the measurement device 30. In order to measure the measured value, it is possible to connect an external measuring device that is separately provided by the user.

그리고, 상기 측정장치(30)는 광신호의 레벨, 손실, 파장, 소광비 중 어느 하나 또는 다수의 항목에 대한 측정이 가능하다.In addition, the measuring device 30 can measure any one or a plurality of items of the level, loss, wavelength, extinction ratio of the optical signal.

상기 통신장치(20)와 상기 측정장치(30), 표시장치(40) 및 입출력 단자(10)가 포함되어 구성되어지는 광통신 장비의 외측에 상기 측정장치(30)가 레벨, 손실, 파장, 소광비중 다수를 측정할 경우 각각의 측정항목에 해당하는 버튼이 형성되어지는 버튼부가 구성되어 사용자가 측정하고자 하는 해당 항목의 버튼을 눌러 측정할 수 있도록 측정버튼이 형성될 수 있다.Level, loss, wavelength, extinction ratio of the measuring device 30 on the outside of the optical communication equipment including the communication device 20, the measuring device 30, the display device 40 and the input and output terminal 10 In the case of measuring a large number, a button unit is formed in which a button corresponding to each measurement item is formed.

본 고안의 다른 구성은 외부의 광통신 장비와 통신장치(120)가 연결되어지도록 광케이블과 통신장치(120) 간에 입출력 단자(110)가 설치되어지고, 상기 입출력 단자(110)와 통신장치(120) 간에 외부의 별도로 구비되는 측정장치가 연결되어지는 측정단자(130)가 설치되어진다.In another configuration of the present invention, the input and output terminal 110 is installed between the optical cable and the communication device 120 so that the external optical communication equipment and the communication device 120 is connected, and the input and output terminal 110 and the communication device 120 Between the measuring terminal 130 is connected to the measuring device provided separately from the outside is installed.

도 1은 본 고안에 따른 광신호를 측정하는 측정장치가 내재된 광통신 장비의 전체 구성도,1 is an overall configuration diagram of an optical communication device embedded with a measuring device for measuring an optical signal according to the present invention,

도 2는 본 고안에 따른 광신호를 측정하는 측정장치가 내재된 광통신 장비의 외측면에 버튼부와 포시장치 및 입출력단자가 형성되어진 것을 나타낸 전면도,2 is a front view showing that a button unit, a posh device, and an input / output terminal are formed on an outer surface of an optical communication device having a measuring device for measuring an optical signal according to the present invention;

도 3은 본 고안에 따른 광신호를 측정하는 측정단자가 구비된 광통신 장비의 통신장치와 입출력단자 간에 측정단자가 형성되어진 것을 나타낸 구성도,3 is a configuration diagram showing that the measurement terminal is formed between the communication device and the input and output terminals of the optical communication equipment provided with a measuring terminal for measuring the optical signal according to the present invention,

도 4는 본 고안에 따른 광신호를 측정하는 측정단자가 구비된 광통신 장비의 전체 구성도.4 is an overall configuration diagram of an optical communication device having a measuring terminal for measuring an optical signal according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>

10 : 입출력 단자 20 : 통신장치10: input / output terminal 20: communication device

30 : 측정장치 40 : 표시장치30: measuring device 40: display device

50 : 측정단자 110 : 입출력 단자50: measuring terminal 110: input / output terminal

120 : 통신장치 130 : 측정단자120: communication device 130: measuring terminal

Claims (4)

광신호 이상여부를 측정하는 장치가 연결되는 광통신 장비에 있어서,In the optical communication equipment to which the device for measuring the optical signal abnormality is connected, 외부의 광통신 장비의 입출력 단자와 광케이블로 연결되어지는 입출력 단자(10)와;An input / output terminal 10 connected to an input / output terminal of an external optical communication device and an optical cable; 상기 입출력 단자(10)와 연결되어 외부의 광통신 장비와 광신호로 통신하는 통신장치(20)와;A communication device 20 connected to the input / output terminal 10 to communicate with an external optical communication device through an optical signal; 상기 입출력 단자(10)와 상기 통신장치(20) 간에 병렬로 연결되어 상기 입출력 단자(10)를 통해 상기 통신장치로 전송되어지는 광신호의 이상신호를 측정하고 검출해 내는 측정장치(30)와;A measuring device 30 connected in parallel between the input / output terminal 10 and the communication device 20 to measure and detect an abnormal signal of an optical signal transmitted to the communication device through the input / output terminal 10; ; 상기 측정장치(30)와 연결되어 상기 측정장치(30)에서 출력되어지는 측정값을 표시하는 표시장치(40);를 포함하여 구성되어지는 것을 특징으로 하는 광신호를 측정하는 측정장치가 내재된 광통신 장비.And a display device 40 connected to the measuring device 30 to display the measured value output from the measuring device 30. Optical communication equipment. 제 1항에 있어서,The method of claim 1, 상기 측정장치(30)는 광신호의 레벨, 손실, 파장, 소광비 중 어느 하나 또는 다수의 항목에 대한 측정이 가능한 것을 특징으로 하는 광신호를 측정하는 측정장치가 내재된 광통신 장비.The measuring device 30 is an optical communication device incorporating a measuring device for measuring the optical signal, characterized in that for measuring any one or a plurality of items of the level, loss, wavelength, extinction ratio of the optical signal. 제 1항에 있어서,The method of claim 1, 상기 입출력 단자(10)와 통신장치(20) 간에는 별도의 측정장치가 외부에서 연결되어질 수 있도록 측정단자(50)가 형성되어지는 것을 특징으로 하는 광신호를 측정하는 측정장치가 내재된 광통신 장비.Optical communication equipment inherent in the measuring device for measuring the optical signal, characterized in that the measuring terminal 50 is formed between the input and output terminal 10 and the communication device 20 so that a separate measuring device can be connected from the outside. 광신호 이상여부를 측정하는 장치가 연결되는 광통신 장비에 있어서,In the optical communication equipment to which the device for measuring the optical signal abnormality is connected, 외부의 광통신 장비의 입출력 단자와 광케이블로 연결되어지는 입출력 단자(110)와;An input / output terminal 110 connected to an input / output terminal of an external optical communication device and an optical cable; 상기 입출력 단자(110)와 연결되어 외부의 광통신 장비와 광신호로 통신하는 통신장치(120)와;A communication device 120 connected to the input / output terminal 110 to communicate with an external optical communication device through an optical signal; 상기 입출력 단자(110)와 통신장치(120) 간에 설치되어 별도의 측정장치가 외부에서 연결되어질 수 있도록 하는 측정단자(130);를 포함하여 구성되어지는 광신호를 측정하는 측정단자가 구비된 광통신 장비.Optical communication provided with a measuring terminal for measuring the optical signal comprising a; measuring terminal 130 is installed between the input and output terminal 110 and the communication device 120 so that a separate measuring device can be connected from the outside equipment.
KR2020080013640U 2008-10-13 2008-10-13 Optical communication measurement is equipment do measurement equipment immanence of optical signal KR200451518Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020080013640U KR200451518Y1 (en) 2008-10-13 2008-10-13 Optical communication measurement is equipment do measurement equipment immanence of optical signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020080013640U KR200451518Y1 (en) 2008-10-13 2008-10-13 Optical communication measurement is equipment do measurement equipment immanence of optical signal

Publications (2)

Publication Number Publication Date
KR20100004162U true KR20100004162U (en) 2010-04-22
KR200451518Y1 KR200451518Y1 (en) 2010-12-20

Family

ID=44450214

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2020080013640U KR200451518Y1 (en) 2008-10-13 2008-10-13 Optical communication measurement is equipment do measurement equipment immanence of optical signal

Country Status (1)

Country Link
KR (1) KR200451518Y1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102329990B1 (en) * 2021-06-24 2021-11-23 주식회사 케이티엔티 Optical power monitor module device that identifies the optical fiber in operation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102329990B1 (en) * 2021-06-24 2021-11-23 주식회사 케이티엔티 Optical power monitor module device that identifies the optical fiber in operation

Also Published As

Publication number Publication date
KR200451518Y1 (en) 2010-12-20

Similar Documents

Publication Publication Date Title
JP5341569B2 (en) Insulated input measuring instrument
US9518892B1 (en) Apparatus for identifying optical array polarity and measuring optical signal and power or loss
US8098168B2 (en) Remote communications feedback for utility meter
TW201341774A (en) Imaging sensor array testing equipment
CN104849882A (en) Detection device for liquid crystal display panel
KR200451518Y1 (en) Optical communication measurement is equipment do measurement equipment immanence of optical signal
US10692421B2 (en) Additional module for a processing and/or automation field device
JP2009222400A (en) Sensor system
US20120286761A1 (en) Waterproof ph meter
US9003755B2 (en) Method and apparatus for measuring reflective intensity of display surface
JP5771424B2 (en) Optical line terminator
KR20160092743A (en) Optical signal detecting device capable of real-time monitoring
KR200360131Y1 (en) An electronic wattmeter consists of plurality module
CN204028003U (en) Lens tester
KR101210465B1 (en) One body type optical power meter having fault position finder
KR100893751B1 (en) Optical signal checker
KR101493991B1 (en) Sensor module for vision inspection
KR101947928B1 (en) Method for managing assembling process of electrical product
CN201903412U (en) Embedded optical fiber grating temperature measurement device
US20130141123A1 (en) Ph-meter capable of measuring conductivity and dissolved oxygen simultaneously
CN102109392B (en) Embedding type fiber bragg grating temperature measuring device
KR200497727Y1 (en) Multi-socket that can be switched up and down the display window of the power meter
JP2548895Y2 (en) Pressure measurement display
CN210465546U (en) Intelligent loop resistance tester
KR20150078744A (en) Temperature sensing apparatus

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 20131206

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20141202

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20151211

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee